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{% block title %}Hogwarts train-Jack 's web app{% endblock %}

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<h3>Hogwarts Train Refitting Guide</h3>
<p>Author:Jack</p>
<img src="/static/img/Hogwarts_train_big.jpg" width="685" height="440">
<p>As a star product of the Harry Potter series,
the Hogwarts Express train released by Lego is very lifelike compared with the movie,
which is worth collecting:</p>
<img src="/static/img/train1.jpg">
<p>I give it 99 out of 100. One less point is not to be afraid of its pride, but this Hogwarts train has no power.
Does it really need magic to drive it?
In line with the principle of <abbr title="Do it yourself">DIY</abbr>
and through many investigations of the transformation experience of netizens in various countries,
I have summed up two ways to transform the Hogwarts train without learning magic.</p>
<p>Because the Hogwarts train consists of three parts: the locomotive, the small carriage and the large carriage</p>
<img src="/static/img/train2.jpg">
<p>To add power, the simplest solution is to directly use Lego's train power motor 88002, remote control receiver 8884 and battery 88000,
which are respectively installed in the second car and the third car:</p>
<img src="/static/img/train3.jpg">
<p>The advantage of this scheme is that the transformation is simple,
but the actual test shows that the train is very easy to derail in the curve,
because the power of the train is not in the front of the train, but in the second carriage,
which is equivalent to pushing the front of the train. How can it feel comfortable?
It's so-called "The melon turned around is not sweet".</p>
<p>To solve this problem, we need to move the power to the front of the car.
Therefore, the second more complex solution is to use the M motor 8883,
the remote control receiver 8884 and the battery 88000, which are respectively installed in the front of the car,
the second car and the third car:</p>
<img src="/static/img/train4.jpg">
<p>The difficulty of this plan is not the reconstruction of the two cars behind,
but how to plug the motor into the front of the car. Because the motor drives the wheels and is limited by space,
it can only be placed vertically. After repeated experiments,
the motor can only be placed on the top of the third big wheel and driven by a transmission device to change the vertical rotation into the horizontal rotation.
The schematic diagram is as follows:</p>
<img src="/static/img/train5.jpg">
<br>
<img src="/static/img/train6.jpg">
<br>
<img src="/static/img/train7.jpg">
<p>After unremitting efforts, repeated experiments and field tests,
the Hogwarts train finally ran without magic!</p>
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